My MG's mallard green paint and clearcoat is 3 months old. A couple of days ago I drove my freshly washed car, which has had a coat of wax, to work. Unfortunately, I parked in a spot I'd never parked before and the sprinkler soaked the car, leaving beads of water with white rings. I washed the car as soon as I got home, but the white spots remain. I used paint clay, Mothers paint cleaner and Meguiars #7 glaze, but still have some spots, though they are not as noticeable. What else can I do that will get the spots, but not ruin my paint? I'm a bit shocked, since our town doesn't have hard water and I've never had a significant problem with spotting from the tap water.